The theory of mind includes a set of abilities that are involved in taking other person's perspective, understanding their emotions, and the capacity of compassion toward others. The dark triad traits are narcissism, machiavellianism and psychopathy. Narcissism is characterized by a sense of grandiosity and the constant attention seeking, machiavellianism is characterized by manipulation and deception, and psychopathy is usually manifested through impulsive and callous behavior. The relationship between the dark triad and the theory of mind is evident in ignoring others' feelings and needs. Research mainly shows that people who score high on the dark triad have the ability to recognize other people's emotions, but they do not cause emphatic response in them. The results of the previous research in this field are inconsistent which leads to some researchers believing that people who score higher on the dark triad have lower scores on the theory of mind tests because of their inability to understand other's state, while others believe that those people are successful in recognizing other people's emotional states because it helps them to better manipulate and exploit others. The impact of feedback just like the relation between intelligence and the dark triad is also inconsistent across various research. One view is that people who are more intelligent display more exploitative behavior and try to compensate interpersonal deficiency. The opposite idea is that people with fewer intellectual abillities display more dark triad traits to reach their goals. Because of these contradictions, the aim of this paper was to investigate the impact of feedback on the success on The mental rotation test on the Reading the Mind in the Eyes Test (RMET) considering the dark triad traits and to examine the relation between the dark triad and the success on The mental rotation test regarding the sex of the participants. The research was conducted in which participants did the RMET before and after The mental rotation test and its feedback while their scores on the Short Dark Triad (SD3) were taken into account. Due to RMET's unsatisfactory realiability, further analysis using that test couldn't be carried out. Men scored higher on the SD3 and The mental rotation test. The results show that there is a significant positive correlation between the results men display on the machiavellianism and psychopathy subscales and their success on The mental rotation test, while there's a significant positive correlation between the results women display on the machiavellianism and narcissism subscales and their success on The mental rotation test. That implicates that sex might moderate these relations and also that people with higher intellectual abilities have more pronounced dark triad traits.